Hello again,
I have a question, how many receivers is needed for coverage area around 350nm..
Is it only 4? For MLAT coverage..?
Or more plane=more receivers?
Because my country isn't so big, so we have around 189 receivers..Isn't so much?
Thank you very much for the answer.
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Yea
Today I try to 14.4dBi....I must do some few tests on different gain..I don't know, weather or what..Today is 14.4 good..but more not..the max. is really bad for RTL with active preamp.
really thanks for your help..
have a nice day
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Originally posted by Winap View PostHello,
thank you very much. Now it's ok..
The gain I must setup in menu fr24 and in dump1090 from "max". to my choice.
But the gain must be from the list, not -10dBi, or 10..
This is supported list of gains
Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6
sudo nano /etc/default/dump1090-mutability
setup all you need
press ctrl+x to exit and save Y
sudo service dump1090-mutability restart
grep -i gain /etc/default/dump1090-mutability
pgrep -fa dump1090
This sudo will help me, thanks.
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Hello,
thank you very much. Now it's ok..
The gain I must setup in menu fr24 and in dump1090 from "max". to my choice.
But the gain must be from the list, not -10dBi, or 10..
This is supported list of gains
Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6
sudo nano /etc/default/dump1090-mutability
setup all you need
press ctrl+x to exit and save Y
sudo service dump1090-mutability restart
grep -i gain /etc/default/dump1090-mutability
pgrep -fa dump1090
This sudo will help me, thanks.
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are you running the image from the first post of this thread?
can you show the output of (redact the line with the fr24key):
cat /etc/fr24feed.ini
also the output of the following commands:
grep -i gain /etc/default/dump1090-mutability
pgrep -fa dump1090Last edited by wiedehopf; 2019-02-26, 23:14.
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No not function..If I setup to this number, is it the same..same as 2.7 or 2,7 or 0 gain, or -20 gain..
Not function in setup...this is on max mode only I thing
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Originally posted by Winap View PostHello,
I have problem with my 1090 active filter.
When I run in SDR program, I must reduce gain to max 2,7dBi. Because I thing, the RTL- SDR run automaticaly on max. mode, so its too
much signal.. The filter have 38 dBi gain... So in my raspberry its not possible reduce signal gain manualy.
When I plug this filter to receiver, I don't see any plane, because the signal is too strong.
In RTL software is all ok with this filter and signal is better.
Is it some scripts, for antenna gain please?
Thank you very much
--gain 2.7
If using Dump1090 as 'AVRTCP' or similar. Adjust configuration to include --gain 2.7
sudo dpkg-reconfigure dump1090-mutability
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Hello,
I have problem with my 1090 active filter.
When I run in SDR program, I must reduce gain to max 2,7dBi. Because I thing, the RTL- SDR run automaticaly on max. mode, so its too
much signal.. The filter have 38 dBi gain... So in my raspberry its not possible reduce signal gain manualy.
When I plug this filter to receiver, I don't see any plane, because the signal is too strong.
In RTL software is all ok with this filter and signal is better.
Is it some scripts, for antenna gain please?
Thank you very much
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@anydanow1
Are you loging to Pi using a Monitor connected to RPi by a HDMI cable, and a keyboard plugged into USB port of RPi?
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This link does a good job of explaining the cascading set of questions I had coming to mind next. And I guess that link also clarifies why you were recommending to just use sudo nano when needed....
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Well the user pi is allowed to use sudo, so in that way you have root privileges when you want them.
But the user root is still another user.
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Setting the accuracy and the 50-mile rings worked as you both described. Very cool. A lot of neat stuff to mess with in there!
This weekend I'm going to take some online intro courses for Linux to understand the structure of the OS better and some of the stuff that I'm doing here, learn some of the basic commands, and the ins/outs of the OS. As discussed above, I don't like making changes without really understanding things, just for my own knowledge.
I thought that logging into the Pi as the default Pi user would give me root privileges, which is why I was trying to use File Manager to do the edits. No?
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Originally posted by anydanow1 View PostSo now I have the 100/150/200 rings around my black-dotted location on the PiAware Skyview screen. Done! Would be nice if there was a way to get a 50-mile ring on there too
Code:sudo nano /usr/share/dump1090-fa/html/config.js
Press Ctll+w keys together to enter search mode, then type SiteCircles and press Enter Key.
The cursor will jump to following code in the file
In the line "SiteCirclesDistances = new Array(100,150,200);" add 50, as shown in red below
Code:SiteCircles = true; // true to show circles (only shown if the center marker is shown) // In miles, nautical miles, or km (depending settings value 'DisplayUnits') SiteCirclesDistances = new Array([COLOR="#FF0000"][B]50,[/B][/COLOR]100,150,200);
Now open map in your browser, clear browser cache (Ctrl+Shift+Delete) and reload browser (Ctrl+F5)Last edited by abcd567; 2019-02-19, 18:56.
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dump1090-fa --help says:
--json-location-accuracy <n> Accuracy of receiver location in json metadata: 0=no location, 1=approximate, 2=exact
So in your configuration file you can set that to 2 and the map will display your exact location.
You don't need a terminal to edit the file, you just need to be root (like Administrator in window).
sudo executes the command behind it as root.
nano is the editor used.
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Interesting. Thanks.
I'm new to Linux/Raspian/Pi, so I had just opened the file with File Manager and tried editing it with that typical Windows-like UI approach. Lesson learned that that doesn't seem to work properly on Raspian (?) and I need to use a Terminal window instead.
So now I have the 100/150/200 rings around my black-dotted location on the PiAware Skyview screen. Done! Would be nice if there was a way to get a 50-mile ring on there too, because due to my less than optimal location most of my hit and location reporting is coming from 75 miles or less. The furthest I've gotten is about the 100-mile mark, so I need to do some antenna optimization.
Interestingly, I got my Lat/Lon information by dragging the marker on the map on the FR24 website coordinates screen to my exact zoomed in house location. When I put that same Lat/Lon info into the file above, the black dot on the Skyview screen appears several hundred yards west of where I actually am. Not sure why that's happening (or if it even matters), but I would have thought Skyview would have positioned that Lat/Lon info exactly the same as other tools that I used to double check my location.
Thanks again for the help...I learn something new every day with this stuff!
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